'tcpreplay: -T option
In tcpreplay there is a very useful feature which, according to the official FAQ's, is called with parameter -T :
The packet length (in this case 8892 bytes) is greater then the maximum transmition unit (MTU) on the outgoing interface. Tcpreplay must skip the packet. Alternatively, you can specify the -T option and tcpreplay will truncate the packet to the MTU size, fix the checksums and send it.
Unfortunately, -T appears to be something different in the man page:
-T string, --timer=string
Select packet timing mode: select, ioport, rdtsc, gtod, nano, abstime. This option may appear up to 1 times. The default string for this option is:
gtod
Allows you to select the packet timing method to use:
nano - Use nanosleep() API
select - Use select() API
ioport - Write to the i386 IO Port 0x80
rdtsc - Use the x86/x86_64/PPC RDTSC
gtod [default] - Use a gettimeofday() loop
abstime - Use OS X's AbsoluteTime API
Has this option been removed in more recent versions of tcpreplay?
Sources
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Source: Stack Overflow
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